Don’t just think about it.
I am 5,4 and 155 lbs with broad shoulders and a D chest. Wide hips. I was nervous about the purchase because the model comparison stayed the same for each jacket. I ended up taking a gamble on the large(thinking I may need an XL or bigger), and the L turned out perfectly. Baggy enough that it doesn’t stick to my skin when I’m sweating. Breathable enough that I can tolerate wearing it in the Alabama sun.
I tested the UVA & UVB protection, and minimal UV breached the fabric. Absolutely impressed.
I now have two jackets that I rotate regularly.